From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58733) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcMf1-0000Fq-Rq for qemu-devel@nongnu.org; Wed, 16 Sep 2015 20:02:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZcMew-0003Tk-T1 for qemu-devel@nongnu.org; Wed, 16 Sep 2015 20:02:47 -0400 Received: from g2t4623.austin.hp.com ([15.73.212.78]:58209) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcMew-0003TU-NI for qemu-devel@nongnu.org; Wed, 16 Sep 2015 20:02:42 -0400 References: <55F76064.8010504@hpe.com> <87y4g6mo0l.fsf@linaro.org> From: liang yan Message-ID: <55FA0320.1040701@hpe.com> Date: Wed, 16 Sep 2015 18:02:40 -0600 MIME-Version: 1.0 In-Reply-To: <87y4g6mo0l.fsf@linaro.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] Could not boot a guest vm from kvm mode based on APM X-Gene Host and latest qemu List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?UTF-8?Q?Alex_Benn=c3=a9e?= Cc: Marc Zyngier , qemu-devel@nongnu.org, Christoffer Dall , kvmarm@lists.cs.columbia.edu On 09/16/2015 08:34 AM, Alex Benn=C3=A9e wrote: > liang yan writes: > >> Hello, All, >> >> I am trying to enable kvm for a guest vm on an APM X-Gene Host with >> latest qemu, but could not make it work. >> >> The host is APM X-Gene 8-core, Linux kernel is 4.1.0-rc7-1-arm64, >> >> Guest kernel is linux-3.16rc3 >> >> QEMU is latest version >> >> Host has these dmesg info >> [ 2.708259] kvm [1]: GICH base=3D0x780c0000, GICV base=3D0x780e0000= , IRQ=3D25 >> [ 2.708327] kvm [1]: timer IRQ30 >> [ 2.708335] kvm [1]: Hyp mode initialized successfully >> >> Host has dev/kvm. >> >> command-line is >> aarch64-softmmu/qemu-system-aarch64 -machine virt,kernel_irqchip=3Doff >> -cpu cortex-a57 -machine accel=3Dkvm -nographic -smp 1 -m 2048 -kernel >> aarch64-linux-3.16rc3-buildroot.img --append "console=3DttyAMA0" > I thought I recognised one of my images ;-) > > Why are you running with kernel_irqchip=3Doff? Hello, Alex, Thanks for your reply and your pre-boot image. Very helpful. The reason I ran with "kernel_irqchip=3Doff" is because it showed the=20 error "Create kernel irqchip failed: No such device" are you familiar with it? I did not try kernel 4.3.x yet, have you released on your linaro website=20 now? Thanks for your log file, it shows something wrong with the vcpu, I am=20 gonna check the kvm code from host kernel now. Will let you know the update. Best, Liang > Without it I can boot the image fine on my APM running 4.3.0-rc1-ajb bu= t > with it I helpfully seg the kernel: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > [16035.990518] Bad mode in Synchronous Abort handler detected, code 0x8= 6000006 -- IABT (current EL) =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > [16035.997970] CPU: 1 PID: 21328 Comm: qemu-system-aar Not tainted 4.3.= 0-rc1-ajb #446 > [16036.004203] Hardware name: APM X-Gene Mustang board (DT) > [16036.008191] task: ffffffc3ecea8000 ti: ffffffc3d8078000 task.ti: fff= fffc3d8078000 > [16036.014338] PC is at 0x0 > [16036.015564] LR is at kvm_vgic_map_resources+0x30/0x3c > [16036.019291] pc : [<0000000000000000>] lr : [] psta= te: 00000145 > [16036.025350] sp : ffffffc3d807bb20 > [16036.027348] x29: ffffffc3d807bb20 x28: ffffffc3d8078000 > [16036.031355] x27: ffffffc000642000 x26: 000000000000001d > [16036.035361] x25: 000000000000011b x24: ffffffc3d80c1000 > [16036.039368] x23: 0000000000000000 x22: 0000000000000000 > [16036.043374] x21: ffffffc0fa240000 x20: ffffffc0fa807800 > [16036.047380] x19: ffffffc0fa807800 x18: 0000007f97af20e0 > [16036.051387] x17: 0000007f99c44810 x16: ffffffc0001fb030 > [16036.055394] x15: 0000007f99cc9588 x14: 0000000000922000 > [16036.059401] x13: 000000000097eb80 x12: 00000000004de0f0 > [16036.063406] x11: 0000000000000038 x10: 00000000ffffffff > [16036.067413] x9 : 0000007f97af2480 x8 : 0000000000000050 > [16036.071419] x7 : ffffffc3ec24c840 x6 : 0000000000000000 > [16036.075424] x5 : 0000000000000003 x4 : ffffffc3ece72080 > [16036.079430] x3 : ffffffc3ece72080 x2 : 0000000000000000 > [16036.083436] x1 : ffffffc000a26260 x0 : ffffffc0fa807800 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > [16036.087628] Internal error: Oops - bad mode: 0 [#1] SMP =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > [16036.091528] Modules linked in: > [16036.093278] CPU: 1 PID: 21328 Comm: qemu-system-aar Not tainted 4.3.= 0-rc1-ajb #446 > [16036.099510] Hardware name: APM X-Gene Mustang board (DT) > [16036.103497] task: ffffffc3ecea8000 ti: ffffffc3d8078000 task.ti: fff= fffc3d8078000 > [16036.109642] PC is at 0x0 > [16036.110864] LR is at kvm_vgic_map_resources+0x30/0x3c > [16036.114590] pc : [<0000000000000000>] lr : [] psta= te: 00000145 > [16036.120649] sp : ffffffc3d807bb20 > [16036.122648] x29: ffffffc3d807bb20 x28: ffffffc3d8078000 > [16036.126654] x27: ffffffc000642000 x26: 000000000000001d > [16036.130659] x25: 000000000000011b x24: ffffffc3d80c1000 > [16036.134666] x23: 0000000000000000 x22: 0000000000000000 > [16036.138671] x21: ffffffc0fa240000 x20: ffffffc0fa807800 > [16036.142678] x19: ffffffc0fa807800 x18: 0000007f97af20e0 > [16036.146685] x17: 0000007f99c44810 x16: ffffffc0001fb030 > [16036.150690] x15: 0000007f99cc9588 x14: 0000000000922000 > [16036.154696] x13: 000000000097eb80 x12: 00000000004de0f0 > [16036.158701] x11: 0000000000000038 x10: 00000000ffffffff > [16036.162706] x9 : 0000007f97af2480 x8 : 0000000000000050 > [16036.166712] x7 : ffffffc3ec24c840 x6 : 0000000000000000 > [16036.170719] x5 : 0000000000000003 x4 : ffffffc3ece72080 > [16036.174725] x3 : ffffffc3ece72080 x2 : 0000000000000000 > [16036.178731] x1 : ffffffc000a26260 x0 : ffffffc0fa807800 > >> >> when using cpu "cortex-a57", got the error "kvm_init_vcpu failed: >> Invalid argument" >> when using cpu "host", got the error "Failed to retrieve host CPU feat= ures!" >> >> By the way, all the command line works well under "tcg" mode. >> Anyone has a quick idea? Thanks in advance. >> >> Best, >> Liang